Augustus l



. I (No Model.) Y

A. L. CENTER.

CRANK SHAFT CONNECTION.

Patented Deq. 6 1887.

N. PETERS. Plwlmulhagmphnr. Washinglon. D. C.

UNITED STATES PATENT OFFICE.

AUGUSTUS L. CENTER, OF WEEDSPORT, NEW YORK.

CRANK-SHAFT CONNECTION.

SPECIFICATION forming part of Letters Patent No. 374,174, dated December 6, 1887.

Application filed August 22, 1887. Serial No. 247,548.

To all whom it may concern: v

Be it known that I, AUGUSTUS L. CENTER, of VVeedsport, in the county of Cayuga and State of New York, have invented a new and useful Improvement in Crankshaft Connections for Churns, &c., which improvement is fully set forth in the following specification and shown in the accompanying drawings.

The object of my invention is to producean improved device to receive rectilinear reciprocating motion from a crank by means of a connecting-rod, the same being hereinafter fully described, and more particularly pointed out in the claims.

This improved reciprocating device, though adapted to various uses, is here shown in the form of a rod for a churn-dasher.

Referring to the drawings, Figurel is aside elevation of a churn of any suitable form with my improved reciprocating rod attached to the dasher; Fig. 2, an end elevation ofthe same, seen in the direction indicated by arrow in Fig. 1, the crank-shaft being transversely sectioned, as on the dotted line so in Fig. l, the standards being in part broken away; and Fig. 3, a view of the connecting-rod or pitman, seen in the direction in which Fig. 2 is seen.

Referring to the parts ofthe device as shown, A is the body of the churn, constituting the cream-chamber, which may be of any suitable form and kind.

B are standards rising from the body for the purpose of holding the crank-shaft a, which shaft is provided with an overhanging inertia wheel, I), at one end and at the other with a spur-pinion, c.

dis a spurgear held upon a stud, 6, pro jecting from one of the standards. This gear engages the pinions and is provided with a crank, f, by means of which the shaft a is rotated. As shown, the shaft is formed with two cranks turned in opposite directions to cause the reciprocating rods to alternate in their action. The reciprocating rods 9 are each formed with an offset part, 7:, both of which are divided at their upper free ends into tines i, made to straddle the shaft a. The reciprocating rods, preferably made rectangular in cross-section, pass through rectangular orifices 7c in the lid Z of the churn-body, and are pro- (No model.)

vided with crossbars n of common form at their lower ends. It will be seen that the orifices 7c and the tines of the ofiset parts It form guides for the reciprocating rods, by means of which they are prevented from turning on their axes and are caused to move vertically as the shaft is turned. The reciprocating rods are connected with the respective cranks -of the shalt a by means of pitmen 0. These pit men are each formed with a solid head, p, having an orifice, r, to receive a pin, 8, rigid in an enlarged part, i, of the reciprocating rods. A strap, a, secured to the reciprocating rods, holds the inner end of the pin. These pitmen are formed with orifices v, in which to receive the respective crank-pins, and are further divided longitudinally nearly their whole length in the plane of the axes of the openings 1) and 1'. On account of this division the divided parts may be sprung apart, as indicated by dotted lines in Fig. 3, to put the pitmen onto the crank-pins. A loop, a, pivoted at b to one of said divided parts of each pitman, so as to turn thereon, serves to hold the parts firmly together when placed upon the cranks. The inner surfaces of the tines'i are faced with pads c of soft yielding material-such as leather, thick cloth, or india-rubberto bear more easily against the shaft as the reciproeating rods are pushed and pulled toward one side or the other by the action of the pitmen as the cranks are turned.

WVhat I claim as my invention is- 1. A reciprocating rod formed with an enlarged part, if, and an offset part divided atits free end, in combination with a pin rigid in said enlarged part, a rotary crank-shalt and crank, and a pitman joining said crank and pin.

2. A reciprocating rod formed with an enlarged part, t, and a divided offset part, in

combination with a pin rigid in said enlarged part, a rotary crank-shaft and crank, and a pitman joining said crank and pin, the tines of said divided offset part being padded, for the purpose set forth.

AUGUSTUS L. CENTER. \Vit-nesses:

E. B. WHITMORE, M. L. McDERMorT. 

